Infrared Equilateral Prism
Infrared material equilateral prisms (60° top angle) are optical elements designed for the infrared wavelength (usually referred to as 0.75μm-14μm) for applications such as thermal imaging, infrared spectroscopy, and laser transmission. What materials can Yutai Optics process for infrared equilateral prisms? Si: Transmission Range: 1.2-7μm; Refractive Index: ~3.4; Advantage: High hardness, low cost, heat resistant; Disadvantage: 8-14μm impermeable; Typical Application: MIR laser, thermal imaging Ge: Transmission Range: 2-16μm; Refractive Index: ~4.0; Advantage: Wide infrared transmission, high refractive index; Disadvantage: High brittleness, temperature sensitive; Typical Application: Thermal imaging, CO₂ laser (10.6μm) ZnSe: Transmission Range: 0.5-20μm; Refractive Index: ~2.4; Advantage: Wide band, low absorption, resistant to laser damage; Disadvantage: High cost, soft (easily scratched); Typical Application: High power laser, infrared spectroscopy CaF2: Transmission Range: 0.15-9μm; Refractive Index: ~1.4; Advantage: UV to MIR, low dispersion; Disadvantage: Brittle, not resistant to thermal shock; Typical Application: Multispectral systems, laser windows ZnS: Transmission Range: 0.4-12μm; Refractive Index: ~2.2; Advantage: Wear-resistant, multi-spectrum compatible; Disadvantage: Higher cost
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